TSMC is betting $100 billion that the future of chipmaking runs through Arizona. The US Department of Commerce confirmed the investment on March 3, 2025, alongside President Donald Trump and Commerce Secretary Howard Lutnick, making it the single largest foreign direct investment in US history.
Combined with TSMC’s earlier commitments, the total Arizona investment now stands at a staggering $165 billion.
What TSMC is actually building
The money will fund three new fabrication plants, two advanced packaging facilities, and a dedicated research and development center. All of it is going into Arizona, expanding what was originally a $12 billion commitment back in 2020 to something nearly 14 times larger.
TSMC’s previous pledge of $65 billion had already been ambitious. This additional $100 billion essentially triples down on the company’s US manufacturing footprint.
